Benefits Estimating of Forest Ecosystem Water-Feeding with Gray Correlation Method in Liaoning Province Eastern Mountainous area

The reason and process of estimating water-feeding benefits of forest ecosystem were expatiated with the gray correlation method.The case is mostly important forest style in Liaoning province eastern mountainous area.The indexes include canopy interception,water absorption capacity of the litter,water absorption capacity of soil,forest evaporation and transpiration,infiltration velocity.The results indicated that half mature larch have best water feeding benefit among some forest style,and later is weed tree,half-mature Korean pine,young growth Korean pines,young growth larch and the last is oak.The turn of factors from high importance to low is water absorption capacity of soil,evaporation and transpiration,canopy interception,litter's water absorption,infiltration velocity.